Table 1. Number of nests
and percent nest success for individual study areas that were occupied
predominantly by coyotes, by red foxes, or by both coyotes and red foxes
in North Dakota (1990-91) and South Dakota (1992) and least-squares meansa
estimates of annual and overall nest success (95% CIb in parentheses).

Nest Failures

In coyote areas, 92% (208 of 226) of nest failure was attributed to predation
and 8% (18 of 226) to abandonment without evidence of predation. On fox areas,
94% (136 of 145) of nest failure was attributed to predation, 6% (8 of 145)
to abandonment without evidence of predation, and <1% (1 nest) to farm machinery.